Ion Drum Rocker Cymbal Expansion Kit; Add another cymbal to your Drum Rocker! Able to be used with Rock Band, Rock Band 2 and Guitar Hero World Tour video games and other drum modules, the Ion Drum Rocker has really taken the Main Stage by storm. With this cymbal expansion you can add another cymbal to the mix to give this power-house setup adding an extra dynamic to your game and an extra cymbal trigger when using a drum module. Just mount the included hardware anywhere an your Drum Rocker stand, attach the cymbal and connect the cable to add another assignable cymbal pad. Ion includes a set of color-assignment rings for easy recognition of which color your symbol corresponds to on screen.